Combination truck and concrete mixer



sept. 16 ,I 1924. 1,599,055.

y c. PAYNE CQMBINATION TRUCK AND CONCRETE MIXER Filed Feb. 19. 1923l 5 sheets-sheet 1 I l l vi l .E

5 Sheets-Sheet 2 C. PAYNE Filed' Feb. 19

COMBNATION TRUCK" AND CONCRETE MIXER sept. 16, 1.924.

i mimmnun Sept. 16 1924.

ct. PAYNE COMBINATION TRUCK AND CONC'RETE MIXER Filed Feb. 19. 1923l 5 Sheets-Sheet 5 Sept. 16, 1924. 1,509,055

v f c. PAYNE- l COMBINATION TRUCK AND oucRETE MIXER Filed Feb. 19. 1923 5 sheets-sheet 4 Isept. 16. 1924;

\ l 1,'5o9,o5`5\ l c. PAYNE COMBINATION TRUCK Aub CONCRETE MIXER Fil-ed Feb. 19. 1923 .5 suhe'etsssneet 5 lzmw."

esta,

CHARLES PAYNE, OF WAUKEGAN, ILLINOIS.

COMBINATION TRUCK AND CONCRETEFIIXER.

Applicaton'led February 19, 1923. Serial No. 619,799.

To all whom it may concern."

Be it known that I, CHARLES PAYNE, a citizen of the United States, -residing at Waukegan, in thecounty of Lake and State of Illinois, have invented certain new and useful v Improvements in Combination T ruck and Concrete Mixers, of which the following is a specification.

My invention relates to improvements iny concrete mixers of the kind that are mounted on an automobile truck chassis, so as to be self-propelling and to enable power to be taken from the engine forl rotating the mixer.

One of the objects of the invention is to -provide an improved self-propelling mixer. Another object is to provide a mixer of 'this type which may be readily tilted to dischargethe concrete therefrom. l

whereby the driver, from his seat, may control the amount of Water used in mixing the batch ofconcrete. y

Other objects and advantages will be apparent from the following description and the accompanying drawings, in which- Figure l is a side elevation of the apparartus;

Fig. 2 is a central sectional elevationl thereof;

' Fig. 3 is a rear elevation; l

' Fig. 4 is a section taken on the line 4-4 of Fig. 2;

Fig. 5 is a front elevation;

Fig. 6 is a plan view of the rear part of the chassis;

Fig. 7 is a section taken 011 the line 7-7 of Fig. 6;

Fig. 8 is a plan view of the water tank;

Fig. 9 is a section takencn the line 9 9 ofFig. 8;

Fig. 10 is an elevation of the mixer in tilting position and of a revoluble concrete distributor associated therewith, thelatter being shown in section;

Fig. 11l is a top plan view of said distributor; and f Fig. 12 is an end elevation thereof, partly in section.

l The mixer may be mounted on anygsuitable automobile truck chassis, one -form of which comprises 'Sideframe members l mounted on the wheels 2 in a conventional manner.` Thexengine 3 drives a power shaft vA further object is to provide` meansv 4 through a suitable gear shift located iu a housing 5, the latter having an exten-V sion housing 6, from which an lauxiliary drive shaft 7 issues and is extended rearwardly and?l provided with a worm and gear connection 8, 9, in order that the transverse shaft 10 may be rotated at will. This is 'the shaft which actuates the tilting mechanism for the mixer, as hereinafter .descr-ibed.

The mixer comprises a long cylindrical chamber 11, having a pair ofvdoors 12 hea-r the top-"thereof, as shown in' Fig. 4, which doors may be caused to slide together or slide apart along the arc of a circle, as hereinafter described. The mixer is provided with a longitudinal driving shaft 13, mounted in'bearings 14 and l5 at the front and` rear (Fig. 2) of the apparatus. A tubular member l'rotates with the shaft 13 (Fig. 4) and carries a series of propeller blades 17, the effect of which is to provide' a screw conveyor whereby the ingredients are fed from the rear toward the front of said truck or vice versa, as in mixing,.rotation in either direction of the shaft 13 and propeller blades 17 being possible due to the power being derived through the transmission mechanism of the vehicle.

The cylindrical mixer body is supported adjacent its forward and rear endsv by means of yokes 18 and 22, of semicircular form, partially surrounding the circular body of the mixer, the yoke 18 being provided with bolts IQ, which constitute trun` nions and pass through slots 20 in a v ertical supporting member 21 constituting part of the automobile.

In orde-r to empty the mixer, the rear end thereof is elevated, causing the frontend vto pivot about said trunnionsy 19, the latter sliding forward in' the slots 20as the rear end is being raised. The rear yoke 22 is also provided with trunnions 23 which pass through arc-shaped slots 24 in upright supporting members 25 at the rear of said truck.` Each slot comprises the arc of a circle, the center of which is substantially at the point of contact between the two bevel gears 26 and 27 (Fig. 2). Any other suitable driving elements may be employed. The gear 26 is mounted on the shaft 7, and the gear 27 is mounted on an auxiliary shaft 28, said shaft being supported 'at its forwardvendi'in'a bearing 29, and at its rear end in asbearing-30 mounted in the rear plate of `the mixer; A sprocket wheel 31,

` screw conveyor.

'on the end of .the auxiliary shaft, drives a l lchain 32, thereby rotating 'a sprocket'wheel 33 on the lrear end of theA central shatt 13, in the mixing chamber and rotating the The rear end of said mixer is lifted by cables 35 (Figs. 1,'3, and 10), said cables being secured to rollers 36 on the transverse shaft 10 and passing over pulleys37 mount- -ed near the upper end'of the upright supports 25, thence downwardly to` a point 38, where they. may be secured tothe plate .39, constituting the r'ear of the mixer.

- In order to rotate the, auxiliary shaftlO androllers 36, and therebytilt.'the mixer,

seat in the front of the vehicle a clutch. 40 is provided ,at the rear end of the supporting frame, said clutchjco'mp-ris- 'ing a bell crank lever 41,one end ofi-Which is connected, by means of a rod 42, with an operating lever 43 near the drivers I Whenthe lever is actuated the'gear 9 is slid back and forth transversely to engage or disen age air from a pair of cylinders 46 atthe rear will of the. driver.

of the'frame and thereby allowing the pistons 47 to descend rapidly or slowly at the Said pistons .areconnected' to piston rods 48, the upper 'ends of which encircle the trunnions 23,previous -lydescribed During the upwardmovement of the pistons,lthe airfis drawn in through a one-way valve in tlierelease valve hous- .-ing 45, said valve housing and pistons 'being'connected by a suitable air line 49carried by the frame of the truck.

A brake for the auxiliary shaft 10 is alsol provided, as shown in Figs. 6 and 7,an'd

comprises a .brake band 5,0 surrounding a seat.

brake drum 51, controlled by suitable llinks 'acti-ua ed by a brake .,rod52, said rod extend* ing t a brake lever 53 near the drivers rllhe crushed stone, sand, and cement for a batch of concrete are simply dumpedl into theimixer through .theopen top "thereofg water, 1n measured quantities, being supl plied in the following manner: A reservoir 55 is mounted on the upper rear part of thev truck and is supplied Withjvater by aliose or stand pipe,- for example. This reservoir, as shown in Figs. 8 rand'9, has a valve 56 recense in the bottom thereof, which is normally open, said valve being countei'balanced by al float 57 at the lower end of 'a rod 58 extendlng'downwardly through a tube'in the reservoir, the movable parts being suspended from a pivoted link 59. Water from the reservoir flows past the valve 56 into the measuring tank 60, and fills the same until the ioat 57 is lifted, thereby closing the valve. Byv adjusting' the position oit the float a predetermined volume of Vwater may be permitted to flow into the measuring tank. In order to discharge said water into the mixer chamber, the operator simply pulls a cord `61, the front end of which is acoessible to him and the rear end of `which is secured to 'a pivoted lever '62, the4 lower end-of which actuates alvalve 63, withdrawing. the 'same romits seat, .as shown in F ig. 2, thereby allowing the water to flow p'ast the 'same into a'pipe 64, which has a rectangular form and extends completely around the sides oi. the mixing chamber, that is to say, across the ends and-along the sides thereof,- as shown in Figs. 2 and -f4.''1`he water issues from. aseries of perforations in this pipe, as shown in lFig. 4, and is directed against the sides of the mixer., flowing downwardly against the walls thereof and. preventing `excessive deposits of concrete thereon# VVlhen said cord is released the valve reseats itself and the 10perator, by pulling the second cord 66, withdraws a. pin 67 (Fi-gs.` 3 and 9), ythereby releasing thefpivoted link 59 and the float 57, so that the latter -may descend of its own weight, again opening the valve 56, rlhe. pin 67, is impelled. inwardly by a lea spring 68, and snaps under the linki59 when the floatisraised, in order -to hold the same in raisedpositi'on, as'shown in Fig. 9. 1n 'order`to heat the* water in coldweather, a coil'ed pipe 69 (Figs. 1 and 6) is arranged around the exhaust or muier and connected so that the incoming supply of water is heated before reaching the reservoir and the.tank.

The operator is enabled to close the top' 'of' the -mixer without leaving his seat, by

turning shaft 7 1, on which are mounted .two -wide pulleys or spools v72, on which chains 73 are wound--see Fig, 4. 'Said chains are attached tothe sliding doors 12 and draw said doors together, rll`hey are held against return `movement by a pawl and ratchet 74, 75, lat the-front end of .the shaftfsee 14`ig55.I l

IThe plastic concrete flows from the front endof the mixer when the latter'istilted, being controlled by adoor 76 hinged at the top Aand controlled by a'screw-threaded rod 77 passing through a cross piece 78 and ac- .tuated by a handle 79 (Fig. 1). The issuing concrete ows through a short extension the handle 70, vthereby rotating the l or trough 80, and may be discharged diwheels 82 provided with a handle 83, Whereby it may be moved about by workmen or connected tothe automobile truck and transportedfrom one place to another, It has mounted thereon an inclined chute 84 with helical ribs 85 therein, making a riied tube, whereby, as said tube rotates, the concrete not only flows toward the lower end, but is being continually elevated and dropped back upon itself, to keep it properly mixed and prevent possible separation of the cement from the aggregate. Said tube is freely rotatable in a suitable supportingstructure 8G, and is driven by a chain 87, which may derive its power from an independent. rasoline engine or motor 88, or which may iave an attachment permitting it to take power from the engine on the mixer truck. The supporting structure is mounted to swivel on the supporting base 81, having an enlarged pedestal 89 turning within guides 90. Said pedestal may be provided with a rack and pinion 91, 92, whereby the upper part of the structure may be turned to swing it through a considerable angle, as indicated in Fig. 11, and this operation may be further facilitated by bevel gears 93, 94, and an operating crank 95, if desired.

The advantage of the complete apparatus thus far described is that the truck may travel under` its own power to the loading points and receive a charge of crushed stone, sand, cement, and water. On its return trip to the point of discharge in the case of roadmaking, for example, the truck driver admits the necessary water to the batch and the mixing proceeds while the truck is moving.l The distributor is left at the point where the work is being performed' and is advanced by the workmen from time to time as the work progresses. The truck driver drives up to the distributor, stops the truck with the discharge spout of the mixer pointing into the rotatable barrel of the distributor and, by merely operating the lever, tilts the mixer, thereby discharging its contents, iftr which the truck returns foranother Anothe'r advantage'of the present mixer is that a thorough mix is obtainable regardless of the point at `which the sand, stone and cement are charged into the mixing chamber through the top thereof, thisl be- I ing 'due to the bla-des 17 beinv rotatable in either direction as previoustlyV described. This is anuniprovement over similarly arranged ,mixing chambers heretofore designed in that in such machines the material must be charged in at 'one end and is fed toward the other end lin-the mixing operation, the mixing elements always rotating in the same direction.

I claim: 1. Apparatus of the class described prising a motor vehicle having a cylindrical mixing drum longitudinally arranged thereon in substantially horizontal position' and open at its topv throughout its length, said drum having a discharge opening at one end thereof, a screw conveyor inside said drum, means connected t-o the engine of said vehicle for rotating said conveyor in'either direction to mix the contents of said drum whereby a -thorough mix may be obtained regardless of the point at which the material is charged into said drum, said drum being pivotally mounted near one end thereof and means for raising the other end to discharge the contents through said opening.

2. In apparatus of the class described, an elongated cylindrical mixing drum having trunnions at the sides thereof near one end of said drum, and supports for said drum having slots to receive said trunnions.

3. A concrete mixer having a base with a horizontal cylindrical body mounted thereon, rotatable agitator blades therein, means for driving said blades, additional means for elevating one end of said cylinder, said driving means receiving power from .a point at the center of an arc along which the end of said cylinder travels when elevated.

4. A concrete mixer having a base with a horizontal mixing body mount-ed thereon pivotally supported near `the forward end thereof, upright supports at the rear end thereof having arc-shaped slots therein, trunnions on the rear of said cylindrical body projecting through said slots, means for elevating said rear end, and means for checking the descent thereof.

5. In combination, a motor vehicle having an engine and an exhaust pipe, a concrete mixer mounted thereon having a mixing element, means for driving-'said element l of sliding doors for closing said top, arc-v comshaped guides for controlling the movement of said doors, a rotatable shaft arranged near the top of said cylinder, means thereon operable at the front for rotating the same hand flexible connect-ions from said shafts to said doo-rs to move said doors toward and away from each other simultaneously to ,drum positioned longitudinally' thereon mix# ing elements in said drum, oppositely di'. rested trunnions' carriediby saidA drum adjaf cent its opposite ends, and upright 'support-- ing members mounted o'n 'Said structure", .one oneach side of said drum, said members on engaging each other, one of said shaftsI vscribed, Comprising a supporting structure,

an, elongated horizontally disposedmixing -drum -positionedl longitudinally lthereon..

being pivotally mounted at its bevel gear, a driving yconnection 'from' the engine to said bevel'gea'rs, a concrete mixer-on-said vehicle', means operated by one' of said shafts for. tilting such mixer,- and means.'

- operated by the other ofsaid shafts ormixfY ing the contents of said cylinder.

8. A concrete mixer'eomprising a motor pipe extending around the interior ofsaidk vehicle having a cylindrical/ body thereon,

'a 'shaft arranged* centrally thereof with a series of' propeller blades thereon, and a cylinder` in close proximity to' vtheA sides thereof and havingopenings for directing streams otvater against saidvsides.

9. A portable mixerof the class described ucomprising a supporting structure, a tiltable elongated horizontally disposed mixing'I drum positionedlongitudinally thereon mixing elements in said drum, oppositely ,i directed trunnions .carried bysaid drum adjacenttits opposite ends, and upright supporting members' mount/ed, on said structure, one on each yside of said drum, said members having openings therein for receivmg'sa1d trunnions. I

10, A portable mixer of the olass de-v scribed comprising a supporting structure,

an elongated horizontally disposed mixing having openings therein for receiving said' trunnrns, one'pair of-- said lopeningsbeing in theA fornil of lslots to permit oit-*the con'V -responvdingen'd of said drum-.being raised and lowered.- v f 1l. A portable mixerk of` the class kdescribed comprising p a supporting structure,

an elongatedhorizontally disposed mixing drum positioned i' longitudinally. thereonmixing elements in 'said drum, oppositely bers havingopenings therein for receivingl said t1'unnions,-'all of said 'openings being inthe form of-slots', the latter being formed and arranged in suehwis'eas to permit of. said drum being simultaneouslytilted and moved forward.

ineens@ f 12K-A portable mixer ot the class deadjacent its opposite ends, and upright meinbers mounted on said structure, on'e on` each side ofw Said drum, said members having4 openings therein fol-. reoeiving said trunnions, one pair of lsaid-openings being in the 'form of slots to permit ofthe 'corra' spending end of said-'drum being` raised,l

,means for raisingfthe end of said drum,

and'cush-ioning means for oontrolling the i return movement; of,said` drum.

.13.- A portable mixer' of theclass l.described` comprising a -supporting structure,

a tiltable mixing drum positioned thereon, f"

means for raising one.end of said drum, and eushlomng' means for controlling the return movement of said drum, said last named means comprlsmg an 'air cylinder;i

Ia piston carried by said mixing drum'an engaging -said cylinder, a one-Way valve for admitting air'lto saidcylinder upon up- `Ward movement of said pist/on, and means at-the control, of the operator t'or releasing such air. I Y i 7 14. ln`mixing apparatus of the `class deforwadly of'said structure.

15: ln mixing apparat-us of the 'class' clescribed, a supporting ,struct-ure, including upright spacedapart side members lia-ving larcuate openings thereinyand a m1lxing drum positioned between said'side members .and provided.with 'a pair' of trunnions atd 'each end engaging sa1d openings.

16-l ln mixing apparat-us 'of the olavss de-A scribed, a' supporting structure',f including,

upright spaced apart side members, the-latter having openin s therein, 4a drum vhaving t ierem and posltloned between said side members, and trunnions can.

mixing elements ried said drum and engaging said openings, said openings being -in the form ot' scribed, avsupportingl structure.; a. mixing f .druml mountedthereon,A and 'means for s1- lmultaneou'sly tiltingand sliding said drum its slots, onepair thereof beingangularly disposed with relation to the other to" permit of la simultaneous tilting and, `forward motion` beingimparted to said drum.

Vln testimony whereof, l have subscribed,

my name.

CHARLES PAYNE.- 

